This seems like a basic duplication of the xargs program, written in Go. I won't say that this is a bad thing, as it's likely the author just wanted to do something neat. That said, the main usefulness I could see for this would be to get an xargs-like functionality on Windows without having to install cygwin, if you aren't using Powershell. (which I imagine has its own ways of reading data from a pipe and distributing work over multiple processes, but I'm not familiar enough with it to say)